默认日期格式的支持

yzg-util-base/src/main/java/com/yanzuoguang/util/helper/StringHelper.java

@@ -1143,6 +1143,9 @@ public class StringHelper {
      * @return
      */
     public static String trimStart(String inStr, String prefix) {
+        if (inStr == null) {
+            return null;
+        }
         if (inStr.startsWith(prefix)) {
             String ret = inStr.substring(prefix.length());
             return trimStart(ret, prefix);
@@ -1158,6 +1161,9 @@ public class StringHelper {
      * @return
      */
     public static String trimEnd(String inStr, String suffix) {
+        if (inStr == null) {
+            return null;
+        }
         if (inStr.endsWith(suffix)) {
             String ret = inStr.substring(0, inStr.length() - suffix.length());
             return trimEnd(ret, suffix);